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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1712724

and then change the status of the bug to 'Confirmed'.

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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1712724

Title:
  s390 zKVM complains about "illegal operation" to s390/mm/pgalloc.c

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [  543.516708] kernel BUG at 
/build/linux-a7axPg/linux-4.12.0/arch/s390/mm/pgalloc.c:84!
  [  543.516783] illegal operation: 0001 ilc:1 [#1] SMP 
  [  543.516785] Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE 
nf_nat_masquerade_ipv4 iptable_nat xt_tcpudp bridge stp llc iptable_filter 
openvswitch nf_conntrack_ipv6 nf_nat_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 
nf_nat_ipv4 nf_defrag_ipv6 nf_nat nf_conntrack binfmt_misc zfs(PO) zunicode(PO) 
zavl(PO) zcommon(PO) znvpair(PO) spl(O) vfio_ccw vfio_mdev mdev 
vfio_iommu_type1 vfio ib_iser rdma_cm iw_cm ib_cm ib_core nfsd iscsi_tcp 
auth_rpcgss nfs_acl lockd grace libiscsi_tcp libiscsi sunrpc 
scsi_transport_iscsi ip_tables x_tables btrfs zlib_deflate raid10 raid456 
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq 
libcrc32c raid1 raid0 linear ghash_s390 prng aes_s390 des_s390 des_generic 
sha512_s390 sha256_s390 virtio_net sha1_s390 sha_common virtio_blk virtio_scsi
  [  543.516828] CPU: 0 PID: 10024 Comm: task-size-overr Tainted: P           O 
   4.12.0-12-generic #13-Ubuntu
  [  543.516829] Hardware name: IBM 2964 N63 400 (KVM/Linux)
  [  543.516830] task: 000000000cdb9e00 task.stack: 00000000099e8000
  [  543.516831] Krnl PSW : 0704d00180000000 00000000001274ec 
(crst_table_upgrade+0x124/0x130)
  [  543.516841]            R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 
RI:0 EA:3
  [  543.516842] Krnl GPRS: 0000000000010000 0000040000000000 00000000243d7800 
0020000000000000
  [  543.516843]            0000000000001000 0000000000000000 0000000000000032 
0000000000000000
  [  543.516844]            0000000080000000 0020000000000000 0000000000000000 
0000000000001000
  [  543.516845]            0020000000000000 00000000243d7800 00000000001239f6 
00000000099ebbe0
  [  543.516853] Krnl Code: 00000000001274de: c0e5002446c1      brasl   
%r14,5b0260
  [  543.516853]            00000000001274e4: a7f4ffb8          brc     
15,127454
  [  543.516853]           #00000000001274e8: a7f40001          brc     
15,1274ea
  [  543.516853]           >00000000001274ec: a728fff4          lhi     %r2,-12
  [  543.516853]            00000000001274f0: a7f4ffee          brc     
15,1274cc
  [  543.516853]            00000000001274f4: 0707              bcr     0,%r7
  [  543.516853]            00000000001274f6: 0707              bcr     0,%r7
  [  543.516853]            00000000001274f8: c00400000000      brcl    0,1274f8
  [  543.516862] Call Trace:
  [  543.516864] ([<00000000085d8578>] 0x85d8578)
  [  543.516868]  [<00000000002f529a>] get_unmapped_area+0x72/0x120 
  [  543.516870]  [<00000000002f931a>] do_mmap+0xfa/0x3e0 
  [  543.516873]  [<00000000002d6292>] vm_mmap_pgoff+0xca/0x120 
  [  543.516874]  [<00000000002f6962>] SyS_mmap_pgoff+0x10a/0x2a0 
  [  543.516875]  [<00000000002f6b72>] SyS_old_mmap+0x7a/0xa8 
  [  543.516880]  [<0000000000864c1c>] system_call+0xc4/0x27c 
  [  543.516881] Last Breaking-Event-Address:
  [  543.516882]  [<00000000001274e8>] crst_table_upgrade+0x120/0x130
  [  543.516883]  
  [  543.516883] ---[ end trace 036f94bf79a83905 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.12.0-12-generic 4.12.0-12.13
  ProcVersionSignature: Ubuntu 4.12.0-12.13-generic 4.12.8
  Uname: Linux 4.12.0-12-generic s390x
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 
2: ls: cannot access '/dev/snd/': No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.6-0ubuntu6
  Architecture: s390x
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 
not found.
  Date: Thu Aug 24 05:01:08 2017
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:
   
  ProcEnviron:
   TERM=vt220
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C
   SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=d86dc8de-6ac8-4e4b-aba8-92872a209a8c 
crashkernel=196M
  RelatedPackageVersions:
   linux-restricted-modules-4.12.0-12-generic N/A
   linux-backports-modules-4.12.0-12-generic  N/A
   linux-firmware                             1.167
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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